Steve Jobs，Michael Dell，Sara Blakely，Dyson有什么共同的地方？
"DOS spread thanks to Microsoft's aggressive business tactics. One of its targets was Sir Alan Sugar's computer company Amstrad. A Microsoft salesman – or "mid-Atlantic smoothie", as Sugar called him – visited Amstrad's offices in Brentwood, Essex, trying to sell the company DOS. But Sugar refused."
"The salesman returned every day until Sugar finally relented and bought it for a very low sum. For Microsoft, it was more important to get MS-DOS used on as many computers as possible rather than making a big amount of money from any one deal."
4. 如何写sales letter